PROCESS FOR PURIFICATION OF POLYCYCLIC COMPOUNDS, PROCESS FOR PRODUCTION OF POLYCYCLIC COMPOUNDS, AND USES OF POLYCYCLIC COMPOUNDS

摘要

The invention provides a process for production of polycyclic compounds substantially free from impurities such as sulfuric acid. The process comprises the step of synthesizing a polycyclic compound having a -SO3M group through sulfonation, the step of mixing the obtained synthetic with an organic solvent in which SO42- or SO3- is soluble and in which the polycyclic compound is slightly soluble to prepare a dispersion, and the step of filtering the dispersion to separate the polycyclic compound. Examples of the polycyclic compounds include quinoxaline derivatives represented by the general formula(I).